Vapor-burning lamp.



No. 654,380.. Patented July 24, I900. W. F. BRADBURY & L. G. SMITH.

VAPOR BURNING LAMP.

(Application filed. Nov. 3, 1899.) (No Model.) 2 Sheets-Sheet M51855 c3.nuaffon? 4 %J@W My JJ/J The worms Puma co. mom-urns msummou. n. a

No. 654,380. Patented July 24, I900.

W. F. BRADBURY &.'L. G. SMITH.

VAPOR BURNING'LAMP.

. (Applicati on filed Nov. 3,1899. (No Model.) 2 Sheets-Sheet 2..

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WILLIAM F. BRADBURY AND LEVI G. SMITH, OF KANSAS CITY, KANSAS.

VAPOR-BURNING LAMP.

SPECIFICATION forming part of Letters Patent N 0. 654,380, dated July24, 1900. Application filed November 3,1399. Serial No. 735,696. (Nomodel.)

To all whom it may "concern:

Be it known that We,-WILLIAM F. BRAD- BURY and LEVI G. SMITH, whoseresidence and post-office address is Kansas City, in the county ofWyandotte, in theState of Kansas, citizens of the United States, haveinvented certain new and useful Improvements in Vapor-Burning Lamps, ofwhich the following is a full, clear, and exact description, referencebeing had to the accompanying drawings, which form a part of thisspecification.

Our invention relates to improvements in vapor-burning lamps of thatclass in which a liquid hydrocarbon, usually gasolene, is vaporized fromthe heat of the burner and the vapor mixed with a suitable amount of airand carried to the burner and there ignited and burned in the presenceof asurrounding incandescent mantle; and our invention consists incertain features of novelty hereinafter described, and pointed out inthe claims.

Figure 1 represents an elevation of a lamp complete embodying ourinvention. Fig. 2 represents a vertical section of the oil-reservoir andair-chamber. Fig. 3 represents a vertical section of the generator orvaporizer. Fig. 4: represents a cross-section of the union by which thevapor-tube fromthe reservoir is connected with the air-mixing tube. Fig.5 represents a cross-section of the union connecting the supply-pipewith the vaporizer. Fig. 6 represents a plan view of the top of thevaporizer-thimble.

Similar numerals refer to similar parts throughout the several views.

1 represents a hanging-bracket by which the lamp and its parts aresupported or suspended. I

2 represents a liquid-reservoir or supplytank carried on said bracket.As shown in Fig. 2, said reservoir, over its central portion, isconstructed and provided with a vaporstorage chamber 3, and its sidesare extended upward, forming a casing 4, having an inturned rim 5 andproviding an air-cup 6, surrounding the vapor-storage chamber 3.

7 represents a casing forming an air-chamber 8 of larger diameter thanthe casing 4 and reservoir and arranged to move vertically over thesame.

9 represents a packing-ring fitting closely against the inner face ofthe casing 7 under pressure of the air within the air chamber,

whereby said air-chamber is sealed against the escape of air therefrom.Said packingring is secured upon the rim 5 by the ring 10 and screws 11passing therethrough. and engaging the rim. At the top of said casing 7are provided lugs 12, formed and arranged to engage and travelvertically upon guides 13, formed on the bracket 1, as the casing movesup and down over the reservoir.

14 represents a weight added to the weight of the casing to assist inits downward movement. a

15 represents a cord secured to the top of the casing and passing overthe pulley 16,

. whereby the casing is raised or drawn up, and

17 represents a stop pivoted on the bracket to prevent the casing beingdrawn up so far that the lugs will escape from the guides, but which maybe turned aside topermit disengagement of the lugs when it is desired toremove the casing.

18 represents an air-tube communicating with the bottom of the air-cup 6and extending to near the bottom of the reservoir.

19 represents an air-tube for supplying air to the air-chamber. 20represents a valve having its seat upon the end of said air-tube andprovided with a stem 21, engaging a per forated lug 22, mounted on thecasing of the vapor-storage chamber, said valve being re tained upon itsseat by pressure of the air in the air-chamber.

A lamp-fixture of any desired form, formed of tubing, supports a burner23, provided with a chimney 2 1 and incandescent mantle 25 in the usualmanner. l

26 represents a supply-pipe, which als serves to support the fixture.Said pipe communicates with the reservoir at or near its bottom andthrough the passage 27in the union 28 with the supply-tube 29 of thefixture, said tube 29 in turn communicating through the-passage 30 inthe union 31 with the vaporizing-tube 32, a valve 33being provided toregulate the supplyof liquid admitted to the vaporizer. Saidvaporizing-tube is arranged to be heated over the chimney 1 and isformed with a cell 34 immediately over and extending a short distancewithin the chimney. Said cell is formed with very thin walls and is openat the top to receive a thimble 35, closed at its inner end and securedporizing surface with very thin walls without increasing the size of thepassage beyond an eifective limit. It will also be noted that by reasonof the thin walls of the cell it may be very quickly heated at thebottom sufficiently to vaporize the liquid preparatory to lighting thelamp, and as the bottom and sides become more intensely heated and thetube sufficiently so to vaporize the liquid the vapor will not be forcedto the bottom of the cell before-it can reach an outlet, but will simplypass around the upper part of the thimble to the'outlet, and thus isavoided a very serious difliculty and objection met with in the usualconstruction, in which two concentric tubes are employed in thevaporizer. In such construction either the inner or outer tubecommunicates with the source of supply and the other withthe outlet forthe vapor, so that the liquid, or after the concentric tubes andhorizontal portion of the vaporizer become sufficiently heated thevapor, must pass clear to the bottom of one of the concentric tubesbefore it can enter the other to pass to the outlet, andinso doing willcome in contact with theintensely-heated surface at the bottom and'onthesides near the bottom, and by such contact the carbon particles of thevapor will become char-red and will issue from the out let as smoke orwill stop up the outlet, in

. either case seriously impairing the usefulness of the lamp. Toovercome and remove this 1 difiiculty in the manner above set outconstitutes a leading feature of the present, invenhlOH.

An injector 37, having a minute opening, is connected with thevaporizing-tube, from which the vapor issues and enters the airopening38 in the union 39, drawingwith it therequisite amount of air, and thevapor and air thus entering in passage through'the mixing-tube 40 to theburner become thor oughly mixed, and being lighted and an in- 41 isprovided extending to within a short 2 distance of the top of thevapor-storage chamber in the reservoir and communicating 1 through thepassage 42 in the union 28 with the-vapor-tube 43 of the fixture, saidvaportube communicating through arestricted passage 44in the union 39with the mixing-tube izer to the necessary temperature.

40, the force of the discharge from said passage being sufficient todraw in through the air-opening 38 the requisite amount of air to mixwith the vapor and form a gas which when ignited at the burner will atonce give a brilliant light as well as heating the vapor- A valve 45 isprovided to close'the passage 44 and prevent the escape of vapor fromthe reservoir when the lamp is not in use. Said passage may, however, beleft open'when the lamp is in use with very advantageous effect, inthat, as is well known, when the vaporizer becomes highly heated greatand irregular expansion of the vapor therein will be produced and at'times a larger supply than can pass out'atthe injector, causing in theusual construction a :fitful ejection of the vapor and consequentfitfulness and unsteadiness of the flame,whi1e with this constructionthe surplus of expanded vapor in the vaporizer will pass backtothereservoir and to the vapor-storage chamber therein and thence throughthe vapor-pipe and its connections to the mixing-chamber, insuring aconstant and full supply of vapor in the mixing-chamber and consequentsteady flame.

To fill the reservoir, the casingforming the air-chamber is removed by.raising it until-the lugs are released from the guides and pour- ;ingthe liquid into the'cup ti, whence it will pass through the tube 18 tothe reservoir, andit will be noted'that if from any cause while{operating the lamp the liquid is drawn or passes from the reservoirinto the cup 6 it will at once flow or be forced by the air-pressureback into the reservoir.

ifill the air-chamber. Then releasing the-cas ing the weight thereonwill cause it to defscend, forcing the air therein through the-airtube18 into the reservoir, where it will pass up through the liquid'to thevapor=storage chamber in a highly-carbureted condition, and the vaporand highly-carbureted air will pass thence through the vapor-pipe 41and- ;vapor-tube 43 to the mixing chamber, and

.f thence, mixed with an additional amount of.

air, to the burner, where being ignited it will produce a brilliantlight and also heat the vaporizer. Fsupply of liquid is turned on and isvaporized, the vapor passes to the burner, and'the lamp continues toburn so longas there is a :supply in the reservoir.

Having thus fully described our improve ments, what we claim as ourinvention, and

desire to secure by Letters Patent, is

a bracket provided with suitable guides, an

oil-reservoir provided with a vapor-storage chamber carried on saidbracket, an air.-

fsaid guides, and adapted to surround said reservoir, a valvedair-supply tube for sup- To light the lamp, the casing forming theair-chamber is drawn up, and the air willflow in through the air-supplytube 19 and The vaporizer being heated'the' 1. The combination witha'vapor-burner of lchamber inverted and arranged to travel on;

plying air to said air-chamber, an air-tube communicating with saidair-chamber and with the reservoir, a packing-ring secured upon thereservoir-casing and bearing upon said air-chamber casing and forming aseal to said air-chamber, and a vapor-pipe extend ing into saidvapor-storage chamber and communicatin g With the burner; substantiallyas set forth.

2. In a vapor-burning lamp the combination with a burner provided with achimney and an incandescent mantle, and a mixingtube having anair-supply opening, and communicating with the burner, of anoil-reservoir, a supply-pipe communicating with said reservoir; and avaporizer arranged over the chimney and communicating with the saidsupply-pipe and consisting of a vaporizingtube, a vaporizing-cell formedin said tube over and extending within the chimney, a thimble secured insaid cell and forming a thin chamber within said cell surrounding saidthimble, and a vapor-injector having a minute opening mounted in saidtube in line with the air-opening in said mixing-chamber, and a Valvefor regulating the supply of liquid to the vaporizer; substantially asset forth.

3. In a vapor-burning lamp, a vaporizer consisting of a vaporizing-tube,a vaporizingcell formed in said tube, a thimble closed at its inner endsecured in said cell and formin g a thin chamber within said cellsurrounding said thimble, and a vapor-injector having a minute openingconnected with said tube, substantially as set forth.

4. In a vapor-burning lamp thecombination with a burner provided with achimney and an incandescent mantle, a mixing-chamber having a suitableair-opening communicating with said burner and a vaporizer arranged tobe heated from the burner and having a minute discharge-opening in linewith said air-opening in the mixing-chamber, of a bracket provided withsuitable guides, an oilreservoir supported by said bracket and having avapor-storage chamber therein, an airchamber mounted over and arrangedto surround said reservoir, lugs on said air-chamber casing arranged toengage and travel upon said guides on said bracket, a packing-ringmounted on said reservoir-casing and forming a seal to said air-chamber,a valved airsupply tube for supplying air to said air-chamber, anair-tube communicating With said airchamber and with said reservoir, asupplypipe communicating with said reservoir and with the vaporizer, avalve for regulating the supply through said supply-pipe, a vapor-pipecommunicating with said vapor-storage chamber and with themixing-chamber, and avalve for controlling such communication,substantially as set forth.

5. In a vapor-burning lamp having a supply-reservoir, a vapor-storagechamber formed in said reservoir, a bracket provided Withvertical guidessupporting said reservoir, an airchamber mounted over and adapted tosurround said reservoir, lugs on said air-chamber casin g arranged toengage and travel upon said guides on said bracket, a packing-ringmounted on said reservoir casing and arranged to form a seal to saidair-chamber, a valved air-tube for supplying air to said airchamber, anair-tube communicating with said air-chamber and said reservoir, asupplypipe leading from said reservoir, and a vapor pipe leading fromsaid vapor-storage chamber, substantially as set forth.

6. In a vapor-burning lamp having a supplyreservoir,a vapor-storagechamber formed in the top of said reservoir, a casing formed by anextension of the sides of said reservoir, and forming a cup surroundingsaid vaporstorage chamber, and a tube communicating with said cup andwith said reservoir, substantially as set forth.

7. In a vapor-burning lamp having a supply-reservoir, the combinationwith a vaporstorage chamber formed in the top of said reservoir, acasing formed by an extension of the sides of said reservoir, having aninturned rim, and forming a cup surrounding said vapor-storage chamber,and a tube communi eating with said cup, and with the reservoir, of abracket supporting said reservoir, and provided with vertical guides, anair-chamber mounted over and adapted to surround said reservoir, lugs onsaid air-chamber casing, ar ranged to engage and travel upon said guideson said bracket, a packing-ring mounted on said rim on saidreservoir-casing arranged to form a seal to said air-chamber and meansfor admitting air into said air-chamber, substantially as set forth.

WILLIAM F. BRADBURY. LEVI G. SMITH.

Witnesses:

W. B. MURRILL, T. H. RIDDLE.

